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US ZIP Code Profile

ZIP Code 78839
Crystal City, Texas

ZIP code 78839 is in Crystal City, located in Zavala County, Texas. Its 2020 Census population was 7,364. The estimated median adjusted gross income per tax return is $29,775, and about 1% of filers report $200,000 or more.

2020 Population
7,364
Census ZCTA
County
Zavala
FIPS 48507
Median income (est.)
$29,775
IRS SOI 2022
Land Area
359.341 mi²
+ 1.924 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityCrystal City, TX
CountyZavala County (FIPS 48507)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates28.718319, -99.82348
Land / Water Area359.341 mi² land · 1.924 mi² water

02Income & Economics

Distribution of the 2,960 individual tax returns filed in 78839 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
44.3%
$25K–$50K
30.1%
$50K–$75K
13.2%
$75K–$100K
5.7%
$100K–$200K
6.1%
$200K+
0.7%
The $200,000+ bracket accounts for 8% of 78839's total adjusted gross income, from 1% of returns — a concentration that drives the gap between the median ($29,775) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 78839's IRS income metrics, 2020–2022.

Median income (2021→2022)
$29,775
▲ 9.1%
Filers earning $200K+
0.7%
▲ 0.0 pt
Total filers
2,960
▼ 2.3%
GET /zipc/v2/zipcodes/78839/soi?year=… $26K 2020 $27K 2021 $30K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 78839 ZCTA.

2000
8,628
 
2010
8,578
▼ -0.6%
2020
7,364
▼ -14.2%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number482175
City AliasesCrystal City

06Frequently Asked Questions

What county is ZIP code 78839 in?

ZIP code 78839 is in Zavala County, Texas (county FIPS code 48507).

What city is ZIP code 78839?

The primary USPS city for 78839 is Crystal City, TX.

What is the population of ZIP code 78839?

The 2020 Census population of 78839 was 7,364 residents.

What is the median income in ZIP code 78839?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 78839 is about $29,775, with around 1% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.